Hanafi scholar Imam Ibn Abidin confirms the Wahhabis are khawarij

“His words and who consider the Companions of our Prophet (Allah bless him and give him peace) to be disbelievers are not a condition for someone to be a kharijite, but rather are a mere clarification of what those who revolted against ‘Ali (Allah Most High be well pleased with him) in fact did. Otherwise, it is enough to be convinced of the unbelief of those they fight against, as happened in our own times with the followers of [Muhammad ibn] ‘Abd al-Wahhab, who came out of the Najd in revolt, and took over the sanctuaries of Mecca and Medina. They followed the Hanbali madhhab, but believed that they were the Muslims, and that those who believed differently than they did were polytheists (mushrikin). On this basis, they held it lawful to kill Sunni Muslims (Ahl al-Sunna) and their religious scholars, until Allah Most High dispelled their forces, and the armies of the Muslims attacked their strongholds and subdued them in 1233 A.H. [1818CE].” (Hashiya Radd al-Muhtar, 4.262)